glXCreateGLXPixmap -- create an off-screen GLX rendering area
GLXPixmap glXCreateGLXPixmap(Display *dpy,
Specifies the connection to the X server.
Specifies the visual that defines the structure of the rendering area.
It is a pointer to an XVisualInfo structure, not a visual ID or
a pointer to a Visual.
Specifies the X pixmap that will be used as the front left color
buffer of the off-screen rendering area.
glXCreateGLXPixmap creates an off-screen rendering area and returns
its XID. Any GLX rendering context that was created with respect to vis can
be used to render into this off-screen area. Use
to associate the rendering area with a GLX rendering context.
The X pixmap identified by pixmap is used as the front left buffer of
the resulting off-screen rendering area. All other buffers specified by
vis, including color buffers other than the front left buffer, are
created without externally visible names. GLX pixmaps with double-buffering
are supported. However,
is ignored by these pixmaps.
Direct rendering contexts cannot be used to render into GLX pixmaps.
XVisualInfo is defined in Xutil.h. It is a structure that
includes visual, visualID, screen, and depth
BadMatch is generated if the depth of pixmap does not match the
GLX_BUFFER_SIZE value of vis, or if pixmap was not
created with respect to the same screen as vis.
BadValue is generated if vis is not a valid XVisualInfo
pointer (e.g., if the GLX implementation does not support this visual).
BadPixmap is generated if pixmap is not a valid pixmap.
BadAlloc is generated if the server cannot allocate the GLX pixmap.
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© 1995 Uwe Behrens All rights reserved